Is symfony/security-http 5.3 vulnerable?

Composer · 12 releases from 5.3.0 to 5.3.14 · latest symfony/security-http is 8.1.10 · checked 2 Nov 2026

Yes: 3 known advisories

Yes. symfony/security-http 5.3.14, the last 5.3 release, is affected by 3 known security advisories (3 high), including CVE-2026-48489, CVE-2026-45063, CVE-2024-51996. 1 more affects earlier 5.3.x releases. Upgrade to 5.4.53 or later to fix all of them.

Upgrade with:composer require symfony/security-http:^5.4.53

Is your project affected?

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Advisories affecting symfony/security-http 5.3.14

  • HighCVE-2026-48489GHSA-6h46-9jf5-q59x15 Jun 2026

    Symfony: Security Firewall Bypass via failure_forward Subrequest: Unauthenticated Access to access_control-Protected GET Routes

    Affected
    <5.4.53 · >=6.0.0 <6.4.41 · >=7.0.0 <7.4.13 · >=8.0.0 <8.0.13
    Fixed in
    5.4.53, 6.4.41, 7.4.13, 8.0.13
  • HighCVE-2026-45063GHSA-ph86-p8f6-f9r227 May 2026

    Symfony Vulnerable to Identity Spoofing via Unanchored DN Regex in X509Authenticator

    Affected
    <5.4.52 · >=6.0.0-BETA1 <6.4.40 · >=7.0.0-BETA1 <7.4.12 · >=8.0.0-BETA1 <8.0.12
    Fixed in
    5.4.52, 6.4.40, 7.4.12, 8.0.12
  • HighCVE-2024-51996GHSA-cg23-qf8f-62rr13 Nov 2024

    Symfony has an Authentication Bypass via RememberMe

    Affected
    >=5.3.0 <5.4.47 · >=6.0.0-BETA1 <6.4.15 · >=7.0.0-BETA1 <7.1.8
    Fixed in
    5.4.47, 6.4.15, 7.1.8

Fixed within 5.3.x, affecting earlier releases

  • MediumCVE-2021-32693GHSA-rfcf-m67m-jcrq21 Jun 2021

    Authentication granted to all firewalls instead of just one

    Affected
    >=5.3.0 <5.3.2
    Fixed in
    5.3.2

Which of your client projects are still on symfony/security-http 5.3?

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Other symfony/security-http versions

Advisory data from OSV.dev (opens OSV.dev in a new tab), which includes the GitHub Advisory Database. Release list from the Composer registry. Refreshed daily.